我被困在我不明白的问题上。主程序从
if __name__ == "__main__":
HelloWorld()
gtk.main()
在HelloWorld
课堂上我有两个信号:
self.button.connect("file-set", self.load_image)
self.window.connect("check-resize", self.resize_image)
他们在这里:
def load_image(self, widget):
self.image_loc = self.button.get_filename()
pixbuf = gtk.gdk.pixbuf_new_from_file(self.image_loc)
self.resize_image
print "image loaded"
和
def resize_image(self, widget):
allocation = self.scrolledwindow.get_allocation()
win_h = float(allocation.height)
win_w = float(allocation.width)
wk = round(float(win_h / win_w), 6)
if self.image_loc is not None:
pixbuf = gtk.gdk.pixbuf_new_from_file(self.image_loc)
image_h = float(pixbuf.get_height())
image_w = float(pixbuf.get_width())
ik = round(float(image_h / image_w), 6)
if image_h <= win_h and image_w <= win_w:
pixbuf = pixbuf.scale_simple(int(image_w), int(image_h), gtk.gdk.INTERP_BILINEAR)
elif (image_h > win_h and image_w <= win_w) or (image_h > win_h and image_w > win_w and ik >= wk):
pixbuf = pixbuf.scale_simple(int((win_h - 30) * (1 / ik)), int(win_h) - 30, gtk.gdk.INTERP_BILINEAR)
elif (image_h <= win_h and image_w > win_w) or (image_h > win_h and image_w > win_w and ik < wk):
pixbuf = pixbuf.scale_simple(int(win_w) - 30, int((win_w - 30) * ik), gtk.gdk.INTERP_BILINEAR)
else:
print "WTF? Incorrect image size calculation"
self.image.set_from_pixbuf(pixbuf)
print "window resized"
虽然加载图像正常并且调整大小没问题,Ctrl+C
但每次调整窗口大小时我都需要。为什么?正如我所发现的,问题是在set_from_pixbuf()
方法内部定位的,因为如果我删除它,我会得到“图像加载”和“窗口调整大小”打印而没有循环。追溯:
window resized
window resized
image loaded
window resized
[...lots of prints...]
window resized
^CTraceback (most recent call last):
File "./photgal.py", line 229, in resize_image
pixbuf = gtk.gdk.pixbuf_new_from_file(self.image_loc)
KeyboardInterrupt
window resized
[...lots of prints...]
window resized
window resized
^CTraceback (most recent call last):
File "./photgal.py", line 229, in resize_image
pixbuf = gtk.gdk.pixbuf_new_from_file(self.image_loc)
KeyboardInterrupt
从此来源更新:据我了解,这You can easily get into infinite loops doing this type
of thing though.
是我的情况,建议The "right way" to
调整一个小部件的大小,而另一个小部件已调整大小is usually to write a custom container
widget that sizes things the way you want.
。这个容器怎么写?